Table 1: The flowering and harvest dates, the seed maturation rating, and the germination and yield components of the wildflower species evaluated in 1994.

Species Flowering Date Harvest Date SMRz % germ. yield lbs/A viable seed yield lbs/A Cat.y
Silene armeria 4-Apr 26-May 1 100 1122 1122 I
Hesperis matronalis 14-Apr 1-Jul 2 98 2658 2605 I
Monarda citriodora 29-Apr 18-Jul 1 78 1426 1112 I
Coreopsis tinctoria 26-Apr 21-Jun 1 63 293 185 II
Bidens aristosa 19-Aug 20-Oct 1 59 70 41 II
Rudbeckia hirta 18-May 26-Jul 1 53 944 500 II
Centaurea cyanus 11-Mar 9-Jun 2 50 1646 823 II
Ipomopsis rubra 18-May 2-Sep 1 45 5112 2300 II
Gypsophilia muralis 18-May 21-Jun 2 68 176 120 II
Chrysanthemum
leucanthemum
23-Mar 18-May 4 22 120 27 II
Achillea millefolium 29-Apr 1-Jul 2 10 169 17 III
Coreopsis lanceolata 22-Apr 5-Jun 4 43 326 140 III
Cosmos bipinnatus 26-May 12-Aug 5 0 935 0 III
Cosmos sulphureus 18-May 26-Jul 5 48 228 110 III
Eschscholzia
californica
8-Mar 5-Jun 4 28 132 37 III
Gaillardia aristata 29-Apr 10-Sep 3 14 227 32 III
Gaillardia pulchellaq 29-Apr 24-Jun 3 20 783 157 III
Oenothera speciosa 4-Apr 26-May 2 0 270 0 III
Papaver rhoeas 4-Apr 9-Jun 1 0 55 0 III
Phlox drummondii 8-Mar 5-Jun 5 68 414 281 III
Salvia coccinea 5-Jun 2-Sep 5 68 249 20 III
Verbena tenuisecta 8-Mar 18-May 5 5 42 2 III
zSeed maturation ratings (SMR) were based on a scale of 1 to 5 with 1=85% to 100% of seeds mature at one time, 2=60% to 84% of seeds mature at one time, 3=seeds mature over a period of weeks, seed heads remain intact, 4=seeds mature and shatter over a period of 2 to 4 weeks, and 5=seeds mature and shatter over a period of 4 to 8 weeks. yCategories for the potential commercial seed production species were as follows: I=excellent potential: seed maturation rating 1 or 2, and germination > 75%, II=moderate potential: seed maturation rating 1,2,3,or 4, and germination > 44%, III= low potential: seed maturation rating 5, and/or germination < 45%.